diff --git a/config/discourse_defaults.conf b/config/discourse_defaults.conf
index 1d1fbd14902..3485721fc2c 100644
--- a/config/discourse_defaults.conf
+++ b/config/discourse_defaults.conf
@@ -35,7 +35,7 @@ db_backup_host =
 db_port =
 
 # db server port to use when taking a backup via `pg_dump`
-db_backup_port = 5432
+db_backup_port =
 
 # database name running discourse
 db_name = discourse